Stitch wheel for knitting machines



Patented Nov. 20, 1323.

isisrarer Vcgi-fries.Y

Josnri-i Broom, or new YORK, iv. Y.

sfrirci-i wif-isnt non iinirfriiie MACHINES.

appiieation sied July 1o, 1923. seriaiivofeoyie.

useful improvements in knitting machines and it pertains more particularly to anew and improved stitch wheel therefor.

Stitch wheels as ordinarily constructed have a plurality of stationary blades which pass between the needles of the circular series to form the stitchA loops. Due to the angle Iat which these blades enter and leave Y the spaces between the needles, the distance between the needles which the blades may move and the consequent size of the loops formed by the stitch wheel is limited.

It is one of the primary objects of the invention to provide a new. and improved stitch wheel, the use of which permits of the formation ot larger loops.

It is a further object of the invention to f construct the stitch wheel in such a manner that loops of different sizes may be Jformed.

With the above and other objects in view, reference is had to the accompanying drawings, in whichv Figure 1 is a sectional view ot' a stitch wheel constructed in accordance with the present invention, the blades of' the wheel being shown in elevation;

Fig. 2 is a plan view of the wheel with a portion of the blades removed;

Fig. 3 is a plan view ot' the stitch wheel support; v

Fig. 4 is a perspective view of one of the blades employed in one of the stitch wheels;

Fig. 5 is a view partly in elevation and partly schematic, of a stitch wheel constructed in accordance with the present invention;

Fig. .6 is a perspective view of one of the blades, the view having been taken at a Vditt'erent angle than that shown in Fig. 1;

Fig. 7 isa perspective view showing the manner in which the blades of the improved stitch wheel pass between the needles of the circular series;

Fig. 8 is a top plan schematic view showing the manner in which the blades of the improved stitch wheel pass between the vneedles of the circular series.

Referring again to the drawings, the reference character 10 designates asuit-able support, and such support is provided with an opening 11. Projecting through the opening 11 is a spindle 12, and such spindle also projects through a member 13'which has ran extension 14 mounted in the openin l1.

'This member` 13 is secured to the spindle 12 by means of a key, or the like, 15. TheY lowerend of the spindle 12 is screw-threaded, as at 16, and. receives a nut 17, by `means of which the support 10 is clamped between` the member 13 and the nut 17. The member 13 is provided with a flange 18, 'and said flange 18 has an eccentric portion 19, the purpose ci which will be lhereinafter described. T he member 13 and spindle 12 are immovable with respect to the support 10 by Ymeans ot the nut 17. i

The reference character 20 designates the hub member of a stitch wheel, and the body portion 21 of the stitch wheel surrounds the hub member 20 and. is secured thereto by means of bolts, cap screws, or the like, 22.v

The stitch wheel is prevented from movementy longitudinally of the spindle 12, by a cross key 23. The body portion 21 of the stitch wheel is provided with `a plurality of angularly disposed slots 24, and mounted in each othese slots 24, is a blade 25. f The blades 25 are adapted for swinging movement, and are pivotally mounted. upon ring 2G, which ring lies in an annular channel formed in the body Vportion of the stitch wheel, and intersecting the slots 24.

Ey reference to Figs. 4 and 6, it will be seen that each ot the blades 25 comprises a body portion 27 of substantially triangular form. One of the corners of each triangular blade is provided with a hook 28, another corner with a projecting finger 29, and the third corner with a substantially right-angularly disposed biturcated projection 30. This bifurcated projection 30 is more clearly shown in Fig. 4. The hook portion 28 of each of the blades 25 is adapted to engage the ring 26 heretofore mentioned for pivotally supporting `the blades in their respective slots 24.

The projecting finger 29 of the blades is adapted to pass between the needles of a circular series in a circular knitting machine.

When the stitch wheel is assembled or positioncd upon the spindle 12, the urcations of the .bifurcated projection 30 are adapted to engage the flange 18 ot the member 13, as more clearly shown in Fig. 1. l/Vhen the stitch wheel is thus assembled, upon rotation of the circular series of needles, the projection 29 of each of the blades 25 will be caused to pass between the needles of the circular series as clearly shown in Figs. 7" and 8, the needlesof the circular seriesbe ing designated by the reference character 31. The eccentrick portion 19 of the tlange 18 is so positioned with respect to the needles 31 of the circular series, that as the blades 25 pass around the spindle 12 and between needles 31, when the blades 25 are in alinement with the radius of the circle upon which the needles 31 are arranged, the blades 25 will be projected to their limit, as designated by the reference character A in Fig. 8. As -the blades pass through the spaces between the needles of the circular series, the projecting finger 29 carries the thread through such spaces in the ordinary manner, as more clearly shown in Fig. 7.

From the foregoing it is apparent that the distance to which the blades'areprojected between the needles and the size of theloop (which isdesignated in Fig. 8 by the reference character B) formed thereby, is determined by the degree ot' eccentricity of the eccentric portion 19. Therefore, by varying the pitch or degree of eccentricity of the eccentric portion 19, loops of various `sizes maybe obtained. It is therefore apparent that the present invention provides a stitch wheel, the use of which permits ol larger loops being obtained in circular knit# ting machines than is possible where the blades of the stitch wheel are rigidly mount-` l claim:

1. A'rotary burr wheel for use with knitting machines of the united needle type, said burr wheel comprising a plurality of substantially triangular plates having an attaching hook on one corner, a loop sinle c ing nose on another corner, and a biturcated lug upon the third corner.

2. A rotary burr wheel having a body formed oi' a plurality of pivotally suspended chinesy of the united needle type, said burr,

wheel comprising a body portion of pivotally mounted triangular blades, each olf' which consists of a substantially triangular body member having a supporting hook on one corner, a loop sinking nose on a second corner, and a bifurcated guide on the third corner, said bifurcated guide beingl angu larly disposed-with respect to the body of the blade.

1. In a knitting machine, a burr wheel comprising a hub member, a plurality of substantially triangular blades pivotally connected at one of their corners in said hub member, a loop sinking nose formed on a second corner of said substantially triangular blades, a bifurcated guide member formed on the third corner of said substantially triangular blades and occupying a plane below and substantially in align ent with the pivotal mounting of said blades ywhen the latter are in their normal position, and a cam guide having engagement with said bifurcated guide members to determine the extent of pivotal movement of the blades about their point of pivotal sus- JOSEPH BLOM.

pension. 

